signal now deals with void functions

lang/cem/libcc/stdio/getpass.c

@@ -9,7 +9,7 @@ char *prompt;
 	struct sgttyb tty, ttysave;
 	static char pwdbuf[9];
 	int fd;
-	int (*savesig)();
+	void (*savesig)();
 
 	if ((fd = open("/dev/tty", 0)) < 0) fd = 0;
 	savesig = signal(SIGINT, SIG_IGN);

lang/cem/libcc/stdio/popen.c

@@ -40,8 +40,8 @@ pclose(iop)
 {
 	int fd = fileno(iop);
 	int status, wret;
-	int (*intsave)() = signal(SIGINT, SIG_IGN);
-	int (*quitsave)() = signal(SIGQUIT, SIG_IGN);
+	void (*intsave)() = signal(SIGINT, SIG_IGN);
+	void (*quitsave)() = signal(SIGQUIT, SIG_IGN);
 
 	fclose(iop);
 	while ((wret = wait(&status)) != -1) {

lang/cem/libcc/stdio/system.c

@@ -5,7 +5,7 @@ system(str)
 	char *str;
 {
 	int pid, exitstatus, waitval;
-	int (*sigint)(), (*sigquit)();
+	void (*sigint)(), (*sigquit)();
 	int i;
 
 	if ((pid = fork()) < 0) return -1;	/* How do we distinguish this